Results 31 to 40 of about 2,751 (173)

Silicon photonic acoustic detector (SPADE) using a silicon nitride microring resonator

Photoacoustics, 2023
Silicon photonics is an emerging platform for acoustic sensing, offering exceptional miniaturization and sensitivity. While efforts have focused on silicon-based resonators, silicon nitride resonators can potentially achieve higher Q-factors, further ...
Michael Nagli, Ron Moisseev, Nathan Suleymanov, Eitan Kaminski, Yoav Hazan, Gil Gelbert, Ilya Goykhman, Amir Rosenthal   +7 more
doaj   +1 more source

Capsule optoacoustic endoscopy for esophageal imaging [PDF]

Journal of Biophotonics, 2019
AbstractDetection and monitoring of esophageal cancer severity require an imaging technique sensitive enough to detect early pathological changes in the esophagus and capable of analyzing the esophagus over 360 °in a non‐invasive manner. Optoacoustic endoscopy (COE) has been shown to resolve superficial vascular structure of the esophageal lumen in ...
He, Hailong, Stylogiannis, Antonios, Afshari, Parastoo, Wiedemann, Tobias, Steiger, Katja, Buehler, Andreas, Zakian, Christian, Ntziachristos, Vasilis   +7 more
openaire   +4 more sources

Magnetically Actuated Microrobot for Drug Delivery: Current Progress and Challenges

Advanced Robotics Research, EarlyView.
Magnetically actuated microrobots are reshaping targeted drug delivery through wireless propulsion, programmable materials, and localized therapeutic release. This review examines how fabrication, body material selection, structural architecture, loading mechanisms, and imaging‐guided control converge to enable microrobotic therapies while identifying ...
Yang Yang, David J. Cappelleri
wiley   +1 more source

Design, Control, and Clinical Applications of Magnetic Actuation Systems: Challenges and Opportunities

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This review aims to provide a broad understanding for interdisciplinary researchers in engineering and clinical applications. It addresses the development and control of magnetic actuation systems (MASs) in clinical surgeries and their revolutionary effects in multiple clinical applications.
Yingxin Huo, Lidong Yang, Tiantian Xu, Dong Sun   +3 more
wiley   +1 more source

Phototrophic purple bacteria as optoacoustic in vivo reporters of macrophage activity

Nature Communications, 2019
Current optoacoustic probes for cancer imaging have limitations including background noise, long-term toxicity and scarce imaging depth in living tissue.
Lena Peters, Ina Weidenfeld, Uwe Klemm, Anita Loeschcke, Robin Weihmann, Karl-Erich Jaeger, Thomas Drepper, Vasilis Ntziachristos, Andre C. Stiel   +8 more
doaj   +1 more source

Flexible wearable electronics for cardiovascular monitoring from surface signals to deep physiological insights

FlexMat, EarlyView.
This review organizes flexible wearable electronics for cardiovascular monitoring into four interconnected information layers: surface electrophysiology, hemodynamic sensing, vascular imaging, and biofluid biomarker analysis. This framework clarifies how electrical rhythm, vascular loading, structural and flow‐related features, and biochemical states ...
Qiao Chen, Hongwen Chen, Yuanyuan Li, Pingan Yang, Rui Li, Zhihao Zhou   +5 more
wiley   +1 more source

Soft ultrasound priors in optoacoustic reconstruction: Improving clinical vascular imaging

Photoacoustics, 2020
Using the same ultrasound detector, hybrid optoacoustic-ultrasound (OPUS) imaging provides concurrent scans of tissue slices or volumes and visualizes complementary sound- and light-based contrast at similar resolutions.
Hong Yang, Dominik Jüstel, Jaya Prakash, Angelos Karlas, Anne Helfen, Max Masthoff, Moritz Wildgruber, Vasilis Ntziachristos   +7 more
doaj   +1 more source

Real‐Time Observation of Soliton Buildup and Self‐Organization in a GHz Harmonic Mode Locked Fiber Laser

Laser &Photonics Reviews, EarlyView.
This image is an experimental recording of the buildup of harmonic mode‐locking in a fiber laser. The horizontal dimension corresponds to one cavity round trip, where the laser field intensity is displayed in a color scale. The vertical dimension is the evolution time in logarithmic scale, spanning from microseconds to seconds.
Qianqian Huang, Aurélien Coillet, Lilong Dai, Zinan Huang, Haochen Tian, Chengbo Mou, Philippe Grelu   +6 more
wiley   +1 more source

The Dual-Targeted Peptide Conjugated Probe for Depicting Residual Nasopharyngeal Carcinoma and Guiding Surgery

Biosensors, 2022
Detecting residual nasopharyngeal carcinoma (rNPC) can be difficult because of the coexistence of occult tumours and post-chemoradiation changes, which poses a challenge for both radiologists and surgeons using current imaging methods.
Wenhui Huang, Zicong He, Xuekang Cai, Jingming Zhang, Wei Li, Kun Wang, Shuixing Zhang   +6 more
doaj   +1 more source

Automatic insect identification, counting, and monitoring techniques: a review

Pest Management Science, EarlyView.
Automated insect monitoring increasingly integrates optical, acoustic, infrared, radar, electrostatic, and biosensing technologies with artificial intelligence. No single approach is universally optimal; reliable deployment depends on task‐specific validation, representative datasets, robustness under field conditions, energy autonomy, connectivity ...
Mariano González García, Juan Carlos Noguera Polania, Rosana González Combarros, José Ignacio López Sánchez   +3 more
wiley   +1 more source